Question

If f(x)=7x and g(x)=3x+1,find(f*g)(x)

Answer 1

(f*g)(x)=21x+8

Explanation:

f(x)=7x

g(x)=3x+1

(f*g)(x)= 7(3x+1)+1

= 21x+7+1

=21x+8

Answer 2

Answer: The answer is 21x+7

Explanation:

f(x)=7x

g(x)=3x+1

(fog)(x)=f(3x+1)

f=7

7*3x=21x

7*1=7

Ans = 21x+7